Regulating-valve.



G. W. COLLIN.

REGULATING VALVE.

APPLICATION 1 11,1111 NOV. 1a, 1908.

2 SHEETS-SHEET 1.

WITNESSES 1 INVENTOR or e W C07 2121/ BY 3 Q 1 1 6 Z Z 1 v ATTORNEYS G.W. COLLIN.

REGULATING VALVE.

APPLICATION rum) NOV. 18, 1908.

1,001,620. Patented Aug. 29, 1911.

2 sums-sum: 2. Fig.5. Z1

ATTORNEYS ccLuMnlA PLANOGRAHI $0.. WASHINGTON. D. c.

llNlTE STATE PATENT OFFICE.

GEORGE W. COLLIN, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE COLLINVALVE COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF MAINE.

REGULATING-VALVE To all whom it may concern:

Be it known that I, Gnonen lV. CoLLIN, a citizen of the United States,and resident of Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inRegulating-Valves, of which the following is a specification.

My invention relates to new and useful improvements in steam pressureregulating valves, and especially to brass or bronzed lined types ofregulator valves, which are usually produced in cast iron or steel, forthe larger sizes and with a View of obtaining the results and advantagesof an all brass valve.

The valve is connected somewhat along the general lines of the previoustypes of pressure regulator valve patented by me October twenty-fourth,nineteen hundred and five, #802,496, and now being commerciallymanufactured, and includes in part a combined piston and double valve,which are operated by the main steam pressure through the medium of adiaphragm and controlling valve, whereby a uniform but reduced pres sureof steam may he maintained in the service line, though supplied from aboiler or other source of greater and varying pressure. The main bodywhich is the heavier portion of the valve is formed of cast iron orsteel in a way to require very little machine work, and so as to readilyreceive the brass linings which I employ for contact with all movableparts, as for instance the piston and valves before mentioned, thusinsuring an equal. expansion of metal of valves and linings thusproducing a. practical design for the large type of valve which willhave all the advantages of an all brass valve, but which my be producedat a much smaller cost.

Referring to the accompanying two sheets of drawings forming a part ofthis specification and upon which similar characters of reference areused to designate like parts, it will be seen that, Figure 1, shows acentral vertical cross section through my improved brass lined reducingvalve complete. Fig. 2, is a plan view of the same valve on a reducedscale. Fig. 3, is a central vertical longitudi- Specification of LettersPatent.

Application filed November 18, 1908.

Patented A11 29, 1911. Serial No. 463,242.

nal section through the said reducing valve. Fig. 4-, is a detached planview of the lower lining forming the two valve seats, shown in thesectional Figs. 1 and 3, and Fig. 5, is a detached side elevation of thesaid lower lining just referred to.

.lte'lerring in detail to the reference characters marked upon thedrawings 10 indicates the main body of the valve which is formed of castiron or cast steel, having an inlet 11 and an outlet 12. The said inletand outlet being separated by a wall 13 oi. which the horizontal portion1 1 forms a bottom for the live steam chamber 15. This bottom isprovided with a round hole 16 therethrough which is threaded as shown toreceive the brass liner 17 which is screwed therein for permanentattachment.

18 is a vertical rib or splinter that is located central of the steamintake to divide the steam equally as it enters the piston chamber andto insure an equal pressure upon all sides of the valve and stem.

The bottom portion of the casing is provided with a removable plug 19 bymeans of which the valve may be drained should occasion require.

The top of the valve body is iuclosed with a brass cover 20 attached bystud bolts 2]., and has a depending annular liangeQZ forming a linerwhich snugly tits down into the bore of the cylinder just 'lar enough tohold the liner central and in line with the valve ports. Below thisengagement the liner is of a reduced and uniform thickness and spacedfrom the body so as to admit the steam against the outside as well asthe inside, therel'iy being exposed to the steam equally at all pointsand thus getting an equal expansion of the liner and holding it aroundwhere it contacts with the iuclosed movable parts thus insurii'ig aperfect operation. This flange like the said upper portion 15 of thebody is of. a cylindrical form and its inner surface is finished toreceive the piston 23 which is movably mounted therein. The cover isturther provided with a removable plug 20 by means of which access maybe had to the slotted head 21, on piston for turning the same andvalves. The liner 1'? while shown threaded to engage the hole 16 in thebottom 14 may if preferred be driven in instead, and besides forming asteam cushion chamber 2 1 contains a Valve seat adjacent to both theupper and lower ports 25 and 26 respectively, while its flange 34E isshown slotted to receive a spanner wrench whereby it may be secured inplace.

Upon the underside of the piston 23 are formed wings 27 which carry aflat seating type of valve 28 to cover the upper port 25, and beneath itagain are similar wings 29 bearing an annular hub 30 upon their lowerend portions to which the valve 31 is slidably attached by means of thecap 32 screwed to said hub 30 and bearing guides 33 to engage the innerface of the port 26 in lower portion of liner 17 The metal of which thesupplementary port is formed is of an equal thickness throughout, andbeing exposed to the steam on all sides naturally expands equal to agreewith the shape of the movable parts of the valve, thus insuring a freebut close movement of the wings 33 and the valve 31 within the port 26.The upper or flat valve 28 is obviously designed to close the upper port25 while the lower valve 31 closes the lower port 26, and by reason ofthe slight independent vertical movement of the lower valve 31 providedfor upon the hub 30, said valve is permitted to close slightly inadvance of the upper valve 28 in a manner to prevent the cutting of thesaid upper valve, and also in a way to insure the opening of the uppervalve in advance of the opening of the lower valve, which again savesthe upper valve from wire drawing. The interior of the upper cylindricallining 22 is bored to receive the movable piston, and is in properalinement with the bore of port 26 of lower liner 17 so as to insure afree movement of the piston and perfect operation of the valves.

As before intimated my valve is automatically operated by the varyingpressures of steam in low pressure side of the valve and bysubstantially the same means employed in my smaller types of regulatingvalves before referred to. This means in part comprises a diaphragmcontrolling valve 35 which is attached to the side of the body 10 and isconnected through a by-pass 36 to both the high and low pressure sidesof the main valve in the manner shown in Fig. 1. This particularconstruction for applying the controlling valve and by-pass is coveredin another application and therefore a more detailed description of saidfeature is not thought to be necessary herein. The operation of thisvalve therefore is substantially like that of my before mentioned typeof valve and briefly is as follows: With the valve connected up in asteam pipe line, the steam obviously enters the inlet 11 and establishesan equal pressure within the chambers 15 and 37 which are connectedthrough the port 38 in the piston, and tend to hold the valve down uponthe seat until such times as when the pressure in said chamber 37 isreleased. This upper chamber is connected through the pipe 36 with thepressure operated controlling valve, in a manner to be released therebywhen the pressure in the lower side 39 of the service system falls belowthe desired point, so as to allow the initial pressure to lift thepiston and its valve, thus opening first the upper port 25 and then thelower port 26 giving a direct flow of steam into the system to build upand reestablish the pressure therein, until the diaphragm of thecontrolling valve operates to close the same, causing the pressure toagain build up in the upper chamber and force its piston and its valvedown against the seat.

Having thus described my invention what I claim and desire to secure byLetters Pattent is 1. A regulating valve of the class described, thesame comprising an inlet and an outlet chamber with a division walltherebetween having an opening therethrough, a liner of differentmaterial seated in the said opening and forming a suspended cushionchamber intermediate the two chambers with ports to both said inlet andoutlet chambers, and a valve member operatively mounted within the linerto engage the seats thereof.

2. A regulating valve of the class described, the same comprising aninlet and outlet chamber with a division wall therebetween and having athreaded opening therethrough, a liner threaded to engage the saidopening and forming a cushion chamber intermediate of inlet and outletchambers with ports to each of said chambers, and a valve member mountedwithin the liner to engage the seats of said ports.

3. A regulating valve of the class described, the same comprising asteel body with a high and low pressure chamber separated one from theother by a divisional wall, a cover for the body having a dependingannular flange extended into the body to form a liner therefor, a secondliner mounted within the divisional wall and shaped to form a cushionchamber intermediate 0f the high and low pressure chambers with portsleading to and from said cushion chamber, a piston movably mountedwithin the upper liner and a pair of connected valve members to open andclose the ports leading to and from the cushion chamber.

4;. A regulating valve of the class described, the same comprising ahigh and low pressure chamber with a division wall therebetween andhaving an opening therethrough, a liner of different material seated inthe said opening and shaped to form an upper and lower valve seatintermediate the two chambers, a

connected pair of valve members opemtiveiy Signed at Bridgeport, in thecounty of mounted Within the linerto engage the sea ts Fun'iioid andState of Connecticut this 21st thereofia second liner of larger diameter10- day 01' October A. D. 1908.

outed within the chamber above the opening, GEORGE W. COLLIN. and apiston opemtively mounted in the \Vitnesses:

last named lining and connected to operate 1. M. NEWMAN,

the valve members. RUTH RAYMOND.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 01' Patents, Washington, D. C.

